Figure 4. Monitoring of enantioselectivity by chromatography.

HPLC chromatograms of the electrosynthesis products obtained by (a) an electrode imprinted with (R)-MA (red) or (S)-MA (blue) using a MA/H₂PtCl₆ wt ratio of 0.03. (b) An electrode that has been imprinted with a commercial racemic mixture of (R)- and (S)-MA (black) and an electrode that has been initially imprinted with (S)-MA, but for which the chiral information has been deleted by scanning the potential between −0.2 and +1.25 V in 0.5 M H₂SO₄ (red). (c) An electrode imprinted with (R)-MA using a (R)-MA/H₂PtCl₆ wt ratio of 0.03 (red) and 0.05 (blue), compared with the analysis of a commercial racemic mixture (black).